患者男 ,2 1岁。发现左肺下叶占位 1个月入院。既往无结核、传染病史。体检 :无发热 ,未扪及肿大浅表淋巴结 ,左肺下叶呼吸音减弱 ,右肺呼吸音清 ,未闻及干湿性罗音。ＣＴ示 :左肺下叶块影、钙化。临床诊断 :左肺下叶错构瘤 ,遂行左下叶肺楔形切除 ,术后恢复好。病理检查　巨检 Male patient, 21 years old. The left lower lobe was found occupying the hospital for 1 month. No previous tuberculosis and infectious disease history. Physical examination: no fever, no palpable and enlarged superficial lymph nodes, decreased breath sounds in the left lower lobe, and right lung breath sounds, no wet and dry rales. CT showed: left lung lobe shadow, calcification. Clinical diagnosis: left lower lobe hamartoma, hernia line left wedge resection of the lung, postoperative recovery. Pathological examination